Journal article
Spatial degradation mapping and componentwise degradation tracking in polymer-fullerene blends
Department of Energy Conversion and Storage, Technical University of Denmark1
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark2
Max Planck Institute3
Functional organic materials, Department of Energy Conversion and Storage, Technical University of Denmark4
Using X-ray absorption the effects of photodegradation in active layer materials for polymer solar cells are investigated. Through the observation of changes in the X-ray absorption energy spectra the degradation of the individual components is tracked in blends of poly-3-hexyl-thiophene (P3HT) and C60 butyric acid methyl ester (PCBM).
The degradation rates in the blend are decreased by a factor of 3 for P3HT and by a factor between 1.1 and 2.3 for PCBM compared to the pure materials. For P3HT, degradation is resolved spatially using scanning transmission X-ray microscopy and the photodegradation process is found to be intrinsically homogeneous at the nanometer scale.
Language: | English |
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Publisher: | Royal Society of Chemistry |
Year: | 2014 |
Pages: | 5176-5182 |
ISSN: | 20507534 and 20507526 |
Types: | Journal article |
DOI: | 10.1039/c4tc00028e |
ORCIDs: | Madsen, Morten Vesterager , Krebs, Frederik C and Andreasen, Jens Wenzel |